#include <bits/stdc++.h>
using namespace std;
int n; string s[11], t[11];
int main() {
	cin >> n;
	for(int i = 0; i < n; i++) cin >> s[i];
	for(int i = 0; i < n; i++) {
		cin >> t[i];
		if(s[i] != t[i]) {
			cout << i + 1 << endl;
			cout << s[i] << endl;
			cout << t[i] << endl;
			break;
		}
	}
	return 0;
}